osx - Rename & Renumbering by increment in files - Need batch file -

osx - Rename & Renumbering by increment in files - Need batch file -

i need rename & renumber multiple files increment.

example, have files...

per29958_ch01_002-029.pdf per29958_ch02_030-055.pdf per29958_ch03_056-085.pdf

i need renumber , rename as

01_test_ch01_002-029.pdf 02_test_ch02_030_055.pdf 03_test_ch03_056_085.pdf

i have used cmd file, in can rename files, couldnt able add together number infront of new files...

@echo off setlocal enabledelayedexpansion set old=per29958 set new=test /f "tokens=*" %%f in ('dir /b *.pdf') ( set newname=%%f set newname=!newname:%old%=%new%! move "%%f" "!newname!" )

pls help me add together number in prefix increment....

the trick count 100 , strip first digit:

... set count=100 /f "tokens=*" %%f in ('dir /b *.pdf') ( set /a count+=1 set "newname=!count:~1!_test" ...

osx batch-file cmd